glow worm 330 condensing boiler. there's a white box that feeds to the overflow, has two pipes running into it at the top. this appears to be leaking, though water is building up on the top of it none of the connections to it seem to be leaking and neither of the pipes above that are wet either.
i wondered if this 'thing' ( what is it? overflow switch or something? ) was just unable to let water out due to frozen outlet, so oiked off the output pipe, but this didn't result in a gush of water, so not that.
any ideas beyond 'call a plumber' ( though i accept that may be in the post… ). thank you!
balls wrong forum! why can't you edit that!